<template>
  <div
    :id="`marsgis-container${mapKey ? '-' + mapKey : ''}`"
    :class="['mars3d-container', customClass, { 'mars3d-container-compare-rh' : compare }]"
  ></div>
</template>

<script>
import Vue from "vue";
import axios from "axios";

export default {
  name: "CesiumViewer",

  props: {
    // 初始化配置参数
    url: String,
    widgetUrl: String,

    // 地图唯一性标识
    mapKey: {
      type: String,
      default: ""
    },

    // 自定义参数
    options: Object,

    // 是否分屏显示
    compare: {
      type: Boolean,
      default: false
    },

    // 是否插入到body元素上
    appendToBody: {
      type: Boolean,
      default: false
    },

    // 自定义css类名
    customClass: {
      type: String,
      default: ""
    }
  },

  mounted() {
    if (this.appendToBody) {
      document.body.appendChild(this.$el);
    }

    if (this.mapKey) {
      this.initMars3d(this.options);
    } else {
      this.getMapConfig(this.url).then(data => {
        this.initMars3d(data);
      });
    }
  },

  beforeDestroy() {
    this[`viewer${this.mapKey}`].mars.destroy();
    this[`viewer${this.mapKey}`].destroy();
    delete this[`viewer${this.mapKey}`];
  },

  methods: {
    getMapConfig(url) {
      return new Promise((resolve, reject) => {
        axios
          .get(url)
          .then(res => {
            resolve(res.data);
          })
          .then(error => {
            reject(error);
          });
      });
    },

    initMars3d(options) {
      if (this[`viewer${this.mapKey}`]) return;
      
      const viewer = mars3d.createMap({
        id: `marsgis-container${this.mapKey ? `-${this.mapKey}` : ""}`,
        data: options.map3d,
        serverURL: options.serverURL,
        ...this.options
      });
      

      //widget处理
      this.getMapConfig(this.widgetUrl).then(data => {
        this.initStaticWidget(viewer, data);
      });


       
      // Cesium 1.61以后会默认关闭反走样，对于桌面端而言还是开启得好，
      viewer.scene.postProcessStages.fxaa.enabled = true;

      //鼠标滚轮放大的步长参数
      viewer.scene.screenSpaceCameraController._zoomFactor = 2.0;

      //IE浏览器优化
      if (window.navigator.userAgent.toLowerCase().indexOf("msie") >= 0) {
        viewer.targetFrameRate = 20;        //限制帧率
        viewer.requestRenderMode = true;    //取消实时渲染
      }


      // 禁用默认的实体双击动作。
      viewer.screenSpaceEventHandler.removeInputAction(Cesium.ScreenSpaceEventType.LEFT_DOUBLE_CLICK);
      viewer.screenSpaceEventHandler.removeInputAction(Cesium.ScreenSpaceEventType.LEFT_CLICK);

      // 二三维切换不用动画
      if (viewer.sceneModePicker) { viewer.sceneModePicker.viewModel.duration = 0.0; }

      this[`viewer${this.mapKey}`] = viewer;

      // 挂载到全局对象下，所有组件通过this.$viewer访问

      Vue.prototype[`$viewer${this.mapKey}`] = viewer;
      Vue.prototype.$Cesium = Cesium;
      console.log(">>>>> 地图创建成功 >>>>");

      this.$emit("onload", viewer);
    },

    //初始化外部静态widget功能（兼容使用传统模式开发的一些widget）
    initStaticWidget(viewer, widget) {
      mars3d.widget.init(viewer, widget);

      //绑定图层管理
      window.bindToLayerControl = function(options) {
        var layer = viewer.mars.addOperationalLayer(options);

        var manageLayersWidget = mars3d.widget.getClass(
          "widgets/manageLayers/widget.js"
        );
        if (manageLayersWidget) {
          manageLayersWidget.addOverlay(options);
        }
        return layer;
      };
      //取消绑定图层管理 ， 参数为bindToLayerControl返回的图层
      window.unbindLayerControl = function(layer) {
        viewer.mars.removeOperationalLayer(layer.config.id);

        var manageLayersWidget = mars3d.widget.getClass(
          "widgets/manageLayers/widget.js"
        );
        if (manageLayersWidget) {
          manageLayersWidget.removeLayer(layer.config.name);
        }
      };
    }
  }
};
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style lang="less">
.mars3d-container {
  height: 100%;
  overflow: hidden;
}

/* 重写Cesium的css */

/**cesium按钮背景色*/
.cesium-button {
  background-color: #3f4854;
  color: #e6e6e6;
  fill: #e6e6e6;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
  line-height: 32px;
}

.cesium-viewer-geocoderContainer .cesium-geocoder-input {
  background-color: rgba(63, 72, 84, 0.7);
}

.cesium-viewer-geocoderContainer .cesium-geocoder-input:focus {
  background-color: rgba(63, 72, 84, 0.9);
}

.cesium-viewer-geocoderContainer .search-results {
  background-color: #3f4854;
}

.cesium-geocoder-searchButton {
  background-color: #3f4854;
}

.cesium-infoBox-title {
  background-color: #3f4854;
}

.cesium-infoBox {
  background: rgba(63, 72, 84, 0.9);
}

.cesium-toolbar-button img {
  height: 100%;
}

.cesium-performanceDisplay-defaultContainer {
  top: auto;
  bottom: 35px;
  right: 50px;
}
.cesium-performanceDisplay-ms,
.cesium-performanceDisplay-fps {
  color: #fff;
}

/**cesium工具栏位置*/
.cesium-viewer-toolbar {
  top: auto;
  left: auto;
  right: 12px;
  bottom: 35px;
}

.cesium-viewer-toolbar > .cesium-toolbar-button,
.cesium-navigationHelpButton-wrapper,
.cesium-viewer-geocoderContainer {
  margin-bottom: 5px;
  float: right;
  clear: both;
  text-align: center;
}

.cesium-baseLayerPicker-dropDown {
  bottom: 0;
  right: 40px;
  max-height: 700px;
  margin-bottom: 5px;
}

.cesium-navigation-help {
  top: auto;
  bottom: 0;
  right: 40px;
  transform-origin: right bottom;
}

.cesium-sceneModePicker-wrapper {
  width: auto;
}

.cesium-sceneModePicker-wrapper .cesium-sceneModePicker-dropDown-icon {
  float: left;
  margin: 0 3px;
}

.cesium-viewer-geocoderContainer .search-results {
  left: 0;
  right: 40px;
  width: auto;
  z-index: 9999;
}

.cesium-infoBox-title {
  background-color: #3f4854;
}

.cesium-infoBox {
  top: 50px;
  background: rgba(63, 72, 84, 0.9);
}

/**左下工具栏菜单*/
.toolbar-dropdown-menu-div {
  background: rgba(43, 44, 47, 0.8);
  border: 1px solid #2b2c2f;
  z-index: 991;
  position: absolute;
  right: 60px;
  bottom: 40px;
  display: none;
}

.toolbar-dropdown-menu {
  min-width: 110px;
  padding: 0;
}
.toolbar-dropdown-menu > li {
  padding: 0 3px;
  margin: 2px 0;
}
.toolbar-dropdown-menu > li > a {
  color: #edffff;
  display: block;
  padding: 4px 10px;
  clear: both;
  font-weight: normal;
  line-height: 1.6;
  white-space: nowrap;
  text-decoration: none;
}

.toolbar-dropdown-menu > li > a:hover,
.dropdown-menu > li > a:focus {
  color: #fff;
  background-color: #444d59;
}

.toolbar-dropdown-menu > .active > a,
.dropdown-menu > .active > a:hover,
.dropdown-menu > .active > a:focus {
  color: #fff;
  background-color: #444d59;
}

.toolbar-dropdown-menu i {
  padding-right: 5px;
}
</style>
